Balancing mechanism for vehicle-windows.



G. B. MUNGH. BALANCING MECHANISM FOR VEHICLE WINDOWS. APPLICATION FILEDAUG. a, 1913,

1,1 30, 189. Patented Mar. 2, 1915.

WITNESS ES INVENTOR GOTT FRIED BERNHARD MuNcH W] BY ATTORNEY To-LITHQ.WASHING/ON. D. c

till

. eaman .FEEQE.

'GGTTEBIED 'BER-NHARD Mll'NCH,

LPPAEATE GESELLSCHAFT MIT BESCH LAN'Z.

BALANGI'NG MECHANISM FER; VEHICLE-WINDGWS.

Specification of Letters Patent.

Patented Mar. 2,1915.

Application filed August 8, 19-13. Serial No. 183,715.

To all whom it may concern:

Be it known that l, Gorrrnmnldnnnnann Moi: on, a citizen of the GermanEmpire, residing at"Leipzig, in Germany, have invented certain new anduseful Improvements in Balancing Mechanism for Vehiclel Vindows, ofwhich the following is a speci fication.

This invention relates to window balancing mechanism of the type whereina lever system of the type known as lazy tongs is used in combinationwith springs attached thereto and tending to hold said lazy tongs inextended position. Used in connection with the windows of vehicles,having hollow doors into which the windows slide when opened, mechanismof this type is subjected to a great deal of vibration an has been foundto create a very disturbing noise.

The object of my invention is to provide an arrangement whereby thisnoise is avoided or largely reduced.

The invention is illustrated in the accompanying drawing, in which-Figure 1 is a front elevation of the mechanism, partly in section, Fig.2 a side view thereof, also partly in section, and Fig. 3 a verticalcross-section of the door, with the window therein.

In the drawing, a designates the window, and a the door, I) being thelazy tongs. The latter are connected at the upper end to the window a bymeans of a pivot cl, the axis of which lies in the plane of the window,so that the lazy tongs can assume varying angles to the said plane. Atthe lower end the lazy tongs system is pivoted to the door a by means 0a hollow tubular pivot or shaft h, to which it is attached by means of afastening g. The two bottom levers of the lazy tongs are pivoted to thisfastening at 0, 0, their fulcra being spaced apart, and these levershave arms I) extending through a slot at in the upper part of thetubular shaft. The latter contains two coiled springs f engaged with thearms 6 and with hooks m which are adjustably fixed to the heads h of theshaft by means of nuts. The shaft is mounted in bearings a, which liewithin the hollow door and form part of same, the arrangement of thebearings being such that the lazy tongs can assume varying angles to theplane of the cor.

The tubular shaft it may be used as a fact that'the pivots o o lubricantcontainer filled with grease, thick other lubricant, as it has no'outletthe slot n in its upper part. The fthe'bottom levers are spaced apartenables these levers to he placed in one plane, so that only a narrowslot n is required.

What I claim as my invention and desire to secure by Letters Patent ofthe United States is 1. The combination, and a Window sliding in saiddoor, of a lazy tongs system, a spring device engaged with said lazytongs and tending to hold same in its extended position, a pivotconnecting said lazy tongs to the door and enabling the lazy tongssystem to assume varying angles to the plane of the door, and a pivotconnecting the lazy tongs to the window and enabling the lazy tongssystem to assume varying angles to the plane of the window.

2. The combination, with a vehicle door, and a window sliding in saiddoor, of a lazy tongs system, a pivot connecting the lazy tongs to thebottom edge of the window, enabling the lazy tongs system to assumevarying angles to the plane of the window, a tubular pivot connectingthe lazy tongs to the door, enabling the lazy tongs system to assumevarying angles to the plane of the door, said tubular pivot having aslot and the lazy tongs having two lever arms extending through saidslot into said tubular pivot, and springs attached within said tuhularpivot. engaged with said arms and tending to hold said lazy tongs systemin its extended position.

3. The combination, with a vehicle door and a window sliding in saiddoor, of a lazy tongs system, a pivot connecting the lazy tongs to thebottom edge of the window, enabling the lazy tongs system to assumevarying angles to the plane of the window, a tubular pivot connectingthe lazy tongs to the door, enabling the lazy tongs system to assumevarying angles to the plane of the door, said tubular pivot having aslot and the lazy tongs having two lever arms exoil, or except with avehicle door tending through said slot into said tubular pivot, andsprings attached within said tubular pivot, engaged with said arms andtending to hold said lazy tongs system in its extended position, saidtubular pivot being adapted to hold a lubricant.

45 13116 combination, with a vehicle door,

a lazy tongs system, a pivot connectin ing the lazy tongs door, and thelazy arms, with their fulcra spaced apart on and a window sliding insaid door,

the lazy tongs t0 the bottom edge of the 7 Window, enablingthe lazytongs system to assume varying angles to the plane of the Window, atubular pivot mounted in said' door and having a slot, a fasteningconnectto said tubular pivot, the latter enabling the lazy tongs systemto as sume varying angles to the plane of the tongs having two leversaid fastening, extending through said slot g into said tubular pivot,and sprlngs attached arms and tending to 'hold said system in itsextended position. i

In Witness whereof I have signed this specification in the presence oftwo Witnessesu p 1 GOTTFRIED BERNHARD MUNGH- Witnesses: V g

RICHARD CLAUs,

i JRUDoLPH FRICKE.

Bople: of flail patent may be obtained for five cents each, byaddressing the Commissioner 012M011",

. s Washington, I). 0.

